18541072368 has 600 divisors, whose sum is σ = 69157156992. Its totient is φ = 4749954048.

The previous prime is 18541072351. The next prime is 18541072397. The reversal of 18541072368 is 86327014581.

18541072368 is a `hidden beast` number, since 1 + 8 + 541 + 0 + 72 + 36 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 30545121 + ... + 30545727.

Almost surely, 2^18541072368 is an apocalyptic number.

18541072368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18541072368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34578578496).

18541072368 is an abundant number, since it is smaller than the sum of its proper divisors (50616084624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18541072368 is a wasteful number, since it uses less digits than its factorization.

18541072368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 18541072368 in words is "eighteen billion, five hundred forty-one million, seventy-two thousand, three hundred sixty-eight".